. The Canadian field-naturalist. 346 The Canadian Field-Naturalist Vol. 88. Figure 2. One of the openings in the Alfred Bog, Prescott County, where Listera australis was found on 9 June 1973. Photograph by P. M. CatHng. edges of the smaller openings, or in the more extensive openings they could be found around the borders of drier hummocks which supported small spruce and tamarack trees. Figure 3 shows the inflorescence of one of the Listera australis plants. The openings examined are included in an area of about square kilometers ( square miles), located at 45°30' N and 74°49' W,
. The Canadian field-naturalist. 346 The Canadian Field-Naturalist Vol. 88. Figure 2. One of the openings in the Alfred Bog, Prescott County, where Listera australis was found on 9 June 1973. Photograph by P. M. CatHng. edges of the smaller openings, or in the more extensive openings they could be found around the borders of drier hummocks which supported small spruce and tamarack trees. Figure 3 shows the inflorescence of one of the Listera australis plants. The openings examined are included in an area of about square kilometers ( square miles), located at 45°30' N and 74°49' W, kilometers ( miles) southeast of Alfred. Inspection of aerial photographs sug- gests that this area contains only a small fraction of the suitable habitat within the large bog. More extensive and intensive exploration of the bog would probably reveal many more of the twayblades. After hearing from Mr. Catling about the discovery near Alfred, A. A. Reznicek initiated a trip to a bog in Matchedash Township, Simcoe County. On 17 June 1973 the junior author accompanied Mr. Reznicek and J. R. F. Wiseman to this bog, located at 44°51' N and 79°36' W, kilometers ( miles) south of Severn Falls. After more than 2 hours of concentrated search we were able to distinguish 15 plants oiListera australis from their com- panion plants (Figure 4). This station represents a 320-kilometer (200-mile) westward extension of the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club
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